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Finding the Fourth Proportional to 1,100.42, 1,650.66 and 450.70

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Solution

The fourth proportional to 1,100.42, 1,650.66 and 450.70 is: 676.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100.42 : 1,650.66 = 450.70 : x
  2. Step 2: Convert to fraction form
    1,100.42/1,650.66 = 450.70/x
  3. Step 3: Cross multiply
    1,100.42x = 1,650.66 × 450.70
  4. Step 4: Simplify right side
    1,100.42x = 743,952.46
  5. Step 5: Solve for x
    x = 743,952.46/1,100.42
  6. Step 6: Final answer
    x = 676.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.